A Mixed-Integer Second-Order Cone Programming Algorithm for the Optimal Power Distribution of AC-DC Parallel Transmission Channels

For the controllability of the transmission power of DC transmission channels, the optimal power distribution (OPD) of AC-DC parallel transmission channels is an effective measure for improving the economic operation of an AC-DC interconnected power grid. A dynamic optimal power flow model for day-a...

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Bibliographic Details
Published in:Energies (Basel) Vol. 12; no. 19; p. 3605
Main Authors: Lin, Shunjiang, Yang, Zhibin, Fan, Guansheng, Liu, Mingbo, He, Sen, Tang, Zhiqiang, Song, Yunong
Format: Journal Article
Language:English
Published: Basel MDPI AG 20.09.2019
Subjects:
AC-DC interconnected power grid
big M method
cone relaxation
Decision theory
dynamic optimal power flow
Efficiency
Electric power
Electricity distribution
Genetic algorithms
mixed-integer second-order cone programming
optimal power distribution of transmission channels
Optimization algorithms
Systems stability
Wind farms
Wind power
United States > US
China
ISSN:1996-1073, 1996-1073
Online Access:Get full text
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Summary:For the controllability of the transmission power of DC transmission channels, the optimal power distribution (OPD) of AC-DC parallel transmission channels is an effective measure for improving the economic operation of an AC-DC interconnected power grid. A dynamic optimal power flow model for day-ahead OPD of AC-DC parallel transmission channels is established in this paper. The power flow equation constraints of an AC-DC interconnected power grid and the constraints of the discrete regulation requirement of the transmission power of DC channels are considered, which make the OPD model of the AC-DC parallel transmission channels a mixed-integer nonlinear non-convex programming (MINNP) model. Through a cone relaxation transformation and a big M method equivalent transformation, the non-convex terms in the objective function and constraints are executed with the convex relaxation, and the MINNP model is transformed into a mixed-integer second-order cone programming model that can be solved reliably and efficiently using the mature optimization solver GUROBI. Taking an actual large-scale AC-DC interconnected power grid as an example, the results show that the OPD scheme of the AC-DC parallel transmission channels obtained by the proposed algorithm can effectively improve the economical operation of an AC-DC interconnected power grid.
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ISSN:1996-1073
1996-1073
DOI:10.3390/en12193605